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(11)

EP 1 756 720 A1

(12)

(43) Date of publication: 28.02.2007 Bulletin 2007/09 (21) Application number: 05741312.2 (22) Date of filing: 12.05.2005

(51) International Patent Classification (IPC):  G06F 13/10(2006.01) (86) International application number: PCT/JP2005/009105 (87) International publication number: WO 2005/114432 (01.12.2005 Gazette 2005/48)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 24.05.2004 JP 2004153469 (71) Applicant: CANON KABUSHIKI KAISHA Ohta-ku Tokyo 146-8501 (JP)	(72) Inventor: NAKATA, Hiroaki, c/o CANON KABUSHIKI KAISHA Tokyo, 1468501 (JP) (74) Representative: TBK-Patent  Bavariaring 4-6 80336 München 80336 München (DE)